The main 1/2 magnetization plateau in Shastry-Sutherland magnets: Effect of the long-range Ruderman-Kittel-Kasuya-Yosida interactionJ. J. Feng, L. Huo, W. C. Huang, Y. Wang, M. H. Qin, J.-M. Liu and Zhifeng RenEPL, 105 1 (2014) 17009DOI: https://doi.org/10.1209/0295-5075/105/17009